An LPN/LVN is reviewing the medication administration record for a client with an elevated… — NCLEX-PN

An LPN/LVN is reviewing the medication administration record for a client with an elevated temperature. The chart indicates an order for ibuprofen $400\text{ mg}$ PO. The unit medication cart contains a stock bottle of ibuprofen oral suspension labeled $100\text{ mg}/5\text{ mL}$ . How many milliliters will the nurse administer for this dose? (Record your answer as a whole number. Do not include units in your answer.)

Answer: 20 mL

Answer

The nurse should administer

20\text{ mL}

of the ibuprofen suspension.

Using the standard dosage calculation formula of (Desired / Have) × Quantity, the desired dose of

400\text{ mg}

is divided by the available dose of

100\text{ mg}

, which equals 4. Multiplying this by the available volume of

5\text{ mL}

gives the correct volume of

20\text{ mL}

to be administered.

Step-by-Step Solution

Identify the target dose prescribed for the client.

400\text{ mg}

This is the exact amount of medication the client needs to receive based on the order.

Determine the concentration of the medication on hand.

100\text{ mg}

5\text{ mL}

This provides the 'Have' and 'Quantity' values needed for the calculation formula.

Calculate the required volume using the formula: (Desired / Have) × Quantity.

(400 / 100) \times 5 = 20

Dividing the desired dose by the available dose and multiplying by the supplied volume yields the exact milliliters to administer.

Key Concept

Oral Dosage Calculation

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